CVE-2021-40568 : Security Advisory and Response

This CVE record pertains to a buffer overflow vulnerability in Gpac through version 1.0.1, potentially leading to denial of service, code execution, and privilege escalation.

Understanding CVE-2021-40568

This section provides an overview of the vulnerability identified as CVE-2021-40568.

What is CVE-2021-40568?

A buffer overflow vulnerability exists in the svc_parse_slice function in av_parsers.c in Gpac through version 1.0.1. Attackers can exploit this flaw using a malformed MP4 file to trigger denial of service, potential code execution, and privilege escalation.

The Impact of CVE-2021-40568

The implications of CVE-2021-40568 can be severe:

Denial of Service (DoS) attacks
Code execution on affected systems
Escalation of privileges

Technical Details of CVE-2021-40568

This section delves into the technical aspects of the CVE-2021-40568 vulnerability.

Vulnerability Description

The buffer overflow vulnerability in Gpac through version 1.0.1 allows attackers to exploit a malformed MP4 file in the svc_parse_slice function in av_parsers.c.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions Affected: All versions up to 1.0.1

Exploitation Mechanism

By crafting a specially designed MP4 file, attackers can trigger the vulnerability in the svc_parse_slice function, leading to potential exploits for denial of service, code execution, and privilege escalation.

Mitigation and Prevention

Suggestions for mitigating and preventing the CVE-2021-40568 vulnerability.

Immediate Steps to Take

To address CVE-2021-40568, consider the following immediate actions:

Implement the vendor's recommended security patches promptly
Restrict access to vulnerable systems
Monitor for any unusual activities indicating exploit attempts

Long-Term Security Practices

For long-term security enhancement:

Regularly update and patch software to the latest versions
Conduct security audits and vulnerability assessments periodically
Educate users and administrators about safe file handling practices

Patching and Updates

Ensure timely installation of patches released by the software vendor to address the CVE-2021-40568 vulnerability.